How Does the Closing Script Compiler Work?

Closure script tries to keep up always with closure, right? So how does new functionality end up in closure script? Yeah, so like whenever anything new is introduced in closure like transducers or spec or any of these things here, they typically are just copied over directly into the closure script standard library. And then of course, change doesn't necessarily make them work there if any changes are needed. But that's an area where it's very easy to find something that's broken.